nsresult
AccessibleWrap::FirePlatformEvent(AccEvent* aEvent)
{
Accessible* accessible = aEvent->GetAccessible();
NS_ENSURE_TRUE(accessible, NS_ERROR_FAILURE);
PRUint32 type = aEvent->GetEventType();
AtkObject* atkObj = AccessibleWrap::GetAtkObject(accessible);
// We don't create ATK objects for nsIAccessible plain text leaves,
// just return NS_OK in such case
if (!atkObj) {
NS_ASSERTION(type == nsIAccessibleEvent::EVENT_SHOW ||
type == nsIAccessibleEvent::EVENT_HIDE,
"Event other than SHOW and HIDE fired for plain text leaves");
return NS_OK;
}
AccessibleWrap* accWrap = GetAccessibleWrap(atkObj);
if (!accWrap) {
return NS_OK; // Node is shut down
}
switch (type) {
case nsIAccessibleEvent::EVENT_STATE_CHANGE:
return FireAtkStateChangeEvent(aEvent, atkObj);
case nsIAccessibleEvent::EVENT_TEXT_REMOVED:
case nsIAccessibleEvent::EVENT_TEXT_INSERTED:
return FireAtkTextChangedEvent(aEvent, atkObj);
case nsIAccessibleEvent::EVENT_FOCUS:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_FOCUS\n"));
a11y::RootAccessible* rootAccWrap = accWrap->RootAccessible();
if (rootAccWrap && rootAccWrap->mActivated) {
atk_focus_tracker_notify(atkObj);
// Fire state change event for focus
nsRefPtr<AccEvent> stateChangeEvent =
new AccStateChangeEvent(accessible, states::FOCUSED, true);
return FireAtkStateChangeEvent(stateChangeEvent, atkObj);
}
} break;
case nsIAccessibleEvent::EVENT_NAME_CHANGE:
{
nsAutoString newName;
accessible->Name(newName);
NS_ConvertUTF16toUTF8 utf8Name(newName);
if (!atkObj->name || !utf8Name.Equals(atkObj->name))
atk_object_set_name(atkObj, utf8Name.get());
break;
}
case nsIAccessibleEvent::EVENT_VALUE_CHANGE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_VALUE_CHANGE\n"));
nsCOMPtr<nsIAccessibleValue> value(do_QueryObject(accessible));
if (value) { // Make sure this is a numeric value
// Don't fire for MSAA string value changes (e.g. text editing)
// ATK values are always numeric
g_object_notify( (GObject*)atkObj, "accessible-value" );
}
} break;
case nsIAccessibleEvent::EVENT_SELECTION:
case nsIAccessibleEvent::EVENT_SELECTION_ADD:
case nsIAccessibleEvent::EVENT_SELECTION_REMOVE:
{
// XXX: dupe events may be fired
MAI_LOG_DEBUG(("\n\nReceived: EVENT_SELECTION_CHANGED\n"));
AccSelChangeEvent* selChangeEvent = downcast_accEvent(aEvent);
g_signal_emit_by_name(AccessibleWrap::GetAtkObject(selChangeEvent->Widget()),
"selection_changed");
break;
}
case nsIAccessibleEvent::EVENT_SELECTION_WITHIN:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_SELECTION_CHANGED\n"));
g_signal_emit_by_name(atkObj, "selection_changed");
break;
}
case nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TEXT_SELECTION_CHANGED\n"));
g_signal_emit_by_name(atkObj, "text_selection_changed");
break;
case nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TEXT_CARET_MOVED\n"));
AccCaretMoveEvent* caretMoveEvent = downcast_accEvent(aEvent);
NS_ASSERTION(caretMoveEvent, "Event needs event data");
if (!caretMoveEvent)
break;
PRInt32 caretOffset = caretMoveEvent->GetCaretOffset();
MAI_LOG_DEBUG(("\n\nCaret postion: %d", caretOffset));
g_signal_emit_by_name(atkObj,
"text_caret_moved",
// Curent caret position
caretOffset);
} break;
case nsIAccessibleEvent::EVENT_TEXT_ATTRIBUTE_CHANGED:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TEXT_ATTRIBUTE_CHANGED\n"));
g_signal_emit_by_name(atkObj,
"text-attributes-changed");
break;
case nsIAccessibleEvent::EVENT_TABLE_MODEL_CHANGED:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_MODEL_CHANGED\n"));
g_signal_emit_by_name(atkObj, "model_changed");
break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_INSERT:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_ROW_INSERT\n"));
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
PRInt32 rowIndex = tableEvent->GetIndex();
PRInt32 numRows = tableEvent->GetCount();
g_signal_emit_by_name(atkObj,
"row_inserted",
// After which the rows are inserted
rowIndex,
// The number of the inserted
numRows);
} break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_DELETE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_ROW_DELETE\n"));
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
PRInt32 rowIndex = tableEvent->GetIndex();
PRInt32 numRows = tableEvent->GetCount();
g_signal_emit_by_name(atkObj,
"row_deleted",
// After which the rows are deleted
rowIndex,
// The number of the deleted
numRows);
} break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_REORDER:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_ROW_REORDER\n"));
g_signal_emit_by_name(atkObj, "row_reordered");
break;
}
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_INSERT:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_COLUMN_INSERT\n"));
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
PRInt32 colIndex = tableEvent->GetIndex();
PRInt32 numCols = tableEvent->GetCount();
g_signal_emit_by_name(atkObj,
"column_inserted",
// After which the columns are inserted
colIndex,
// The number of the inserted
numCols);
} break;
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_DELETE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_COLUMN_DELETE\n"));
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
PRInt32 colIndex = tableEvent->GetIndex();
PRInt32 numCols = tableEvent->GetCount();
g_signal_emit_by_name(atkObj,
"column_deleted",
// After which the columns are deleted
colIndex,
// The number of the deleted
numCols);
} break;
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_REORDER:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_TABLE_COLUMN_REORDER\n"));
g_signal_emit_by_name(atkObj, "column_reordered");
break;
case nsIAccessibleEvent::EVENT_SECTION_CHANGED:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_SECTION_CHANGED\n"));
g_signal_emit_by_name(atkObj, "visible_data_changed");
break;
case nsIAccessibleEvent::EVENT_SHOW:
return FireAtkShowHideEvent(aEvent, atkObj, true);
case nsIAccessibleEvent::EVENT_HIDE:
return FireAtkShowHideEvent(aEvent, atkObj, false);
/*
* Because dealing with menu is very different between nsIAccessible
* and ATK, and the menu activity is important, specially transfer the
* following two event.
* Need more verification by AT test.
*/
case nsIAccessibleEvent::EVENT_MENU_START:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_MENU_START\n"));
break;
case nsIAccessibleEvent::EVENT_MENU_END:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_MENU_END\n"));
break;
case nsIAccessibleEvent::EVENT_WINDOW_ACTIVATE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_WINDOW_ACTIVATED\n"));
accessible->AsRoot()->mActivated = true;
guint id = g_signal_lookup ("activate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
// Always fire a current focus event after activation.
FocusMgr()->ForceFocusEvent();
} break;
case nsIAccessibleEvent::EVENT_WINDOW_DEACTIVATE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_WINDOW_DEACTIVATED\n"));
accessible->AsRoot()->mActivated = false;
guint id = g_signal_lookup ("deactivate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_WINDOW_MAXIMIZE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_WINDOW_MAXIMIZE\n"));
guint id = g_signal_lookup ("maximize", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_WINDOW_MINIMIZE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_WINDOW_MINIMIZE\n"));
guint id = g_signal_lookup ("minimize", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_WINDOW_RESTORE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_WINDOW_RESTORE\n"));
guint id = g_signal_lookup ("restore", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_COMPLETE:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_DOCUMENT_LOAD_COMPLETE\n"));
g_signal_emit_by_name (atkObj, "load_complete");
} break;
case nsIAccessibleEvent::EVENT_DOCUMENT_RELOAD:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_DOCUMENT_RELOAD\n"));
g_signal_emit_by_name (atkObj, "reload");
} break;
case nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_STOPPED:
{
MAI_LOG_DEBUG(("\n\nReceived: EVENT_DOCUMENT_LOAD_STOPPED\n"));
g_signal_emit_by_name (atkObj, "load_stopped");
} break;
case nsIAccessibleEvent::EVENT_MENUPOPUP_START:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_MENUPOPUP_START\n"));
atk_focus_tracker_notify(atkObj); // fire extra focus event
atk_object_notify_state_change(atkObj, ATK_STATE_VISIBLE, true);
atk_object_notify_state_change(atkObj, ATK_STATE_SHOWING, true);
break;
case nsIAccessibleEvent::EVENT_MENUPOPUP_END:
MAI_LOG_DEBUG(("\n\nReceived: EVENT_MENUPOPUP_END\n"));
atk_object_notify_state_change(atkObj, ATK_STATE_VISIBLE, false);
atk_object_notify_state_change(atkObj, ATK_STATE_SHOWING, false);
break;
}
return NS_OK;
}
nsresult
AccessibleWrap::HandleAccEvent(AccEvent* aEvent)
{
nsresult rv = Accessible::HandleAccEvent(aEvent);
NS_ENSURE_SUCCESS(rv, rv);
Accessible* accessible = aEvent->GetAccessible();
NS_ENSURE_TRUE(accessible, NS_ERROR_FAILURE);
// The accessible can become defunct if we have an xpcom event listener
// which decides it would be fun to change the DOM and flush layout.
if (accessible->IsDefunct())
return NS_OK;
uint32_t type = aEvent->GetEventType();
AtkObject* atkObj = AccessibleWrap::GetAtkObject(accessible);
// We don't create ATK objects for plain text leaves, just return NS_OK in
// such case.
if (!atkObj) {
NS_ASSERTION(type == nsIAccessibleEvent::EVENT_SHOW ||
type == nsIAccessibleEvent::EVENT_HIDE,
"Event other than SHOW and HIDE fired for plain text leaves");
return NS_OK;
}
AccessibleWrap* accWrap = GetAccessibleWrap(atkObj);
if (!accWrap) {
return NS_OK; // Node is shut down
}
switch (type) {
case nsIAccessibleEvent::EVENT_STATE_CHANGE:
{
AccStateChangeEvent* event = downcast_accEvent(aEvent);
MAI_ATK_OBJECT(atkObj)->FireStateChangeEvent(event->GetState(),
event->IsStateEnabled());
break;
}
case nsIAccessibleEvent::EVENT_TEXT_REMOVED:
case nsIAccessibleEvent::EVENT_TEXT_INSERTED:
return FireAtkTextChangedEvent(aEvent, atkObj);
case nsIAccessibleEvent::EVENT_FOCUS:
{
a11y::RootAccessible* rootAccWrap = accWrap->RootAccessible();
if (rootAccWrap && rootAccWrap->mActivated) {
atk_focus_tracker_notify(atkObj);
// Fire state change event for focus
atk_object_notify_state_change(atkObj, ATK_STATE_FOCUSED, true);
return NS_OK;
}
} break;
case nsIAccessibleEvent::EVENT_NAME_CHANGE:
{
nsAutoString newName;
accessible->Name(newName);
MaybeFireNameChange(atkObj, newName);
break;
}
case nsIAccessibleEvent::EVENT_VALUE_CHANGE:
if (accessible->HasNumericValue()) {
// Make sure this is a numeric value. Don't fire for string value changes
// (e.g. text editing) ATK values are always numeric.
g_object_notify((GObject*)atkObj, "accessible-value");
}
break;
case nsIAccessibleEvent::EVENT_SELECTION:
case nsIAccessibleEvent::EVENT_SELECTION_ADD:
case nsIAccessibleEvent::EVENT_SELECTION_REMOVE:
{
// XXX: dupe events may be fired
AccSelChangeEvent* selChangeEvent = downcast_accEvent(aEvent);
g_signal_emit_by_name(AccessibleWrap::GetAtkObject(selChangeEvent->Widget()),
"selection_changed");
break;
}
case nsIAccessibleEvent::EVENT_SELECTION_WITHIN:
{
g_signal_emit_by_name(atkObj, "selection_changed");
break;
}
case nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED:
g_signal_emit_by_name(atkObj, "text_selection_changed");
break;
case nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED:
{
AccCaretMoveEvent* caretMoveEvent = downcast_accEvent(aEvent);
NS_ASSERTION(caretMoveEvent, "Event needs event data");
if (!caretMoveEvent)
break;
int32_t caretOffset = caretMoveEvent->GetCaretOffset();
g_signal_emit_by_name(atkObj, "text_caret_moved", caretOffset);
} break;
case nsIAccessibleEvent::EVENT_TEXT_ATTRIBUTE_CHANGED:
g_signal_emit_by_name(atkObj, "text-attributes-changed");
break;
case nsIAccessibleEvent::EVENT_TABLE_MODEL_CHANGED:
g_signal_emit_by_name(atkObj, "model_changed");
break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_INSERT:
{
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
int32_t rowIndex = tableEvent->GetIndex();
int32_t numRows = tableEvent->GetCount();
g_signal_emit_by_name(atkObj, "row_inserted", rowIndex, numRows);
} break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_DELETE:
{
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
int32_t rowIndex = tableEvent->GetIndex();
int32_t numRows = tableEvent->GetCount();
g_signal_emit_by_name(atkObj, "row_deleted", rowIndex, numRows);
} break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_REORDER:
{
g_signal_emit_by_name(atkObj, "row_reordered");
break;
}
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_INSERT:
{
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
int32_t colIndex = tableEvent->GetIndex();
int32_t numCols = tableEvent->GetCount();
g_signal_emit_by_name(atkObj, "column_inserted", colIndex, numCols);
} break;
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_DELETE:
{
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
int32_t colIndex = tableEvent->GetIndex();
int32_t numCols = tableEvent->GetCount();
g_signal_emit_by_name(atkObj, "column_deleted", colIndex, numCols);
} break;
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_REORDER:
g_signal_emit_by_name(atkObj, "column_reordered");
break;
case nsIAccessibleEvent::EVENT_SECTION_CHANGED:
g_signal_emit_by_name(atkObj, "visible_data_changed");
break;
case nsIAccessibleEvent::EVENT_SHOW:
return FireAtkShowHideEvent(aEvent, atkObj, true);
case nsIAccessibleEvent::EVENT_HIDE:
// XXX - Handle native dialog accessibles.
if (!accessible->IsRoot() && accessible->HasARIARole() &&
accessible->ARIARole() == roles::DIALOG) {
guint id = g_signal_lookup("deactivate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
}
return FireAtkShowHideEvent(aEvent, atkObj, false);
/*
* Because dealing with menu is very different between nsIAccessible
* and ATK, and the menu activity is important, specially transfer the
* following two event.
* Need more verification by AT test.
*/
case nsIAccessibleEvent::EVENT_MENU_START:
case nsIAccessibleEvent::EVENT_MENU_END:
break;
case nsIAccessibleEvent::EVENT_WINDOW_ACTIVATE:
{
accessible->AsRoot()->mActivated = true;
guint id = g_signal_lookup("activate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
// Always fire a current focus event after activation.
FocusMgr()->ForceFocusEvent();
} break;
case nsIAccessibleEvent::EVENT_WINDOW_DEACTIVATE:
{
accessible->AsRoot()->mActivated = false;
guint id = g_signal_lookup("deactivate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_WINDOW_MAXIMIZE:
{
guint id = g_signal_lookup("maximize", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_WINDOW_MINIMIZE:
{
guint id = g_signal_lookup("minimize", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_WINDOW_RESTORE:
{
guint id = g_signal_lookup("restore", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_COMPLETE:
g_signal_emit_by_name (atkObj, "load_complete");
// XXX - Handle native dialog accessibles.
if (!accessible->IsRoot() && accessible->HasARIARole() &&
accessible->ARIARole() == roles::DIALOG) {
guint id = g_signal_lookup("activate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
}
break;
case nsIAccessibleEvent::EVENT_DOCUMENT_RELOAD:
g_signal_emit_by_name (atkObj, "reload");
break;
case nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_STOPPED:
g_signal_emit_by_name (atkObj, "load_stopped");
break;
case nsIAccessibleEvent::EVENT_MENUPOPUP_START:
atk_focus_tracker_notify(atkObj); // fire extra focus event
atk_object_notify_state_change(atkObj, ATK_STATE_VISIBLE, true);
atk_object_notify_state_change(atkObj, ATK_STATE_SHOWING, true);
break;
case nsIAccessibleEvent::EVENT_MENUPOPUP_END:
atk_object_notify_state_change(atkObj, ATK_STATE_VISIBLE, false);
atk_object_notify_state_change(atkObj, ATK_STATE_SHOWING, false);
break;
}
return NS_OK;
}